The present invention relates to the field of computer application technology, and provides a SaaS
system based on commodity exchange, comprising: a module for determining commodities to be exchanged, which selects commodities to be exchanged based on the highest
single item amount, average commodity amount, and accumulated points of a user's current shopping; a commodity review
library module, which updates the commodity review
library with commodity reviews from external large-scale shopping websites; a judgment matrix generation module, which generates a judgment matrix reflecting commodity attributes based on the review information in the commodity review
library; a user propensity matrix generation module, which performs
decision tree classification on the current shopping commodities and user registration information to generate a comparison matrix; and a
hierarchical analysis model, which calculates the judgment matrix and the comparison matrix to select recommended commodities from the commodities to be exchanged. The present invention realizes that a small online shopping SaaS
system can derive suitable recommended points exchange commodities based solely on the current shopping commodities of the user, without relying on user characteristics generated by the user's multiple shopping trips or
multiple platform usages.